 NO PPM(SMOG FAIL), failed NO PPM |
 Mar 1, 2010 - 4:45 PM
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 Enthusiast  Joined Feb 19, '08 From Anaheim,CA Currently Offline Reputation: 2 (100%)  |
I went to smog my car and it failed the NO (PPM) at 15 mph and 25 mph
15 mph MAX 708-I measured 1250! 35 mph MAX 746-I measured 1442! Does this mean i need a new cat? Or a new EGR valve? Possibly my timing? This post has been edited by BeefyT: Mar 1, 2010 - 4:54 PM -------------------- lol
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Mar 2, 2010 - 2:46 AM
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Enthusiast Joined Mar 3, '05 From Richmond, B.C. Currently Offline Reputation: 0 (0%) |
NO is indicative of high combustion temperatures, lean AFR.
Presuming your other results were well within spec consider the EGR, check for intake leaks, your AFR (unlikely to be injectors as you'd notice rough running), fuel leaking around the intake, and make sure your catalytic converter is up to temperature when you get tested (common mistake to take an engine in cold or just barely warm). All of those are much cheaper fixes than replacing your catalytic converter. |
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Mar 2, 2010 - 1:13 PM
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Enthusiast Joined Feb 19, '08 From Anaheim,CA Currently Offline Reputation: 2 (100%) |
QUOTE (Galcobar @ Mar 2, 2010 - 3:46 AM)  NO is indicative of high combustion temperatures, lean AFR. Presuming your other results were well within spec consider the EGR, check for intake leaks, your AFR (unlikely to be injectors as you'd notice rough running), fuel leaking around the intake, and make sure your catalytic converter is up to temperature when you get tested (common mistake to take an engine in cold or just barely warm). All of those are much cheaper fixes than replacing your catalytic converter. thanks for your help....how would I go about checking if its the EGR? -------------------- lol
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Posts in this topic
BeefyT NO PPM(SMOG FAIL) Mar 1, 2010 - 4:45 PM
BeefyT BUMP...anyone have any experience with this? Mar 2, 2010 - 12:50 AM
vile_v First off you should make sure your EGR filter is ... Mar 4, 2010 - 8:17 PM
easternpiro1 damn. im glad i live in the south... they dont giv... Mar 4, 2010 - 9:10 PM |
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